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Power MOS pipe switch power supply integration power supply circuit without auxiliary winding

A technology without auxiliary winding and MOS tube, which is applied in the output power conversion device, the conversion of DC power input to DC power output, electrical components, etc. Production cost, effect on a wide range of applications

Active Publication Date: 2017-04-26
绍兴光大芯业微电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The peripheral circuit of the auxiliary winding power supply structure is complex and the production cost is high

Method used

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  • Power MOS pipe switch power supply integration power supply circuit without auxiliary winding
  • Power MOS pipe switch power supply integration power supply circuit without auxiliary winding
  • Power MOS pipe switch power supply integration power supply circuit without auxiliary winding

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Embodiment Construction

[0016] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0017] The power MOS tube switching power supply integrated power supply circuit without auxiliary winding is characterized in that the circuit includes a high-voltage rectification filter circuit module, a transformer and an integrated circuit module, and the output terminal of the high-voltage rectification filter circuit module is connected to the described The terminals with the same name of the primary winding of the transformer are connected, and the integrated circuit module is connected with the terminals with the same name of the primary winding of the transformer.

[0018] In a preferred embodiment, the high-voltage rectification and filtering circuit module includes a high-voltage rectification and filtering circuit and an AC power supply, and the output terminal of the AC power supply is connecte...

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PUM

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Abstract

The invention relates to a power MOS pipe switch power supply integration power supply circuit without an auxiliary winding. The circuit comprises a high voltage rectification filter circuit module, a transformer and an integrated circuit module. An output terminal of the high voltage rectification filter circuit module is connected to a synonym terminal of a primary winding of the transformer. The integrated circuit module is connected to a dotted terminal of the primary winding of the transformer. By using the power MOS pipe switch power supply integration power supply circuit without the auxiliary winding, one winding of the transformer is omitted, a peripheral circuit is greatly simplified, production cost is reduced and a wide application scope is possessed.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to the technical field of integrated circuit power supply circuits, in particular to a power MOS tube switching power supply integrated power supply circuit without auxiliary windings. Background technique [0002] The traditional isolated switching power supply transformer contains three sets of windings, which are the primary winding for storing energy, the secondary winding for supplying the load, and the auxiliary winding for supplying power to the integrated circuit, such as figure 1 Shown is the circuit structure of the isolated switching power supply for integrated circuit power supply by means of traditional auxiliary winding. [0003] figure 1 The working principle of the traditional auxiliary winding method to realize integrated circuit power supply is as follows: AC alternating current is converted into high-voltage DC signal VBUCK by the high-voltage rectifi...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02M1/08
CPCH02M1/08H02M3/335H02M1/0006
Inventor 田剑彪张宾吴伟江孙菊根
Owner 绍兴光大芯业微电子有限公司
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